
<!DOCTYPE html>
<html lang="zh-CN" >
<head>
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <meta name="renderer" content="webkit">
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width,initial-scale=1.0,viewport-fit=cover">
  <meta name="baidu-site-verification" content="code-p0aPWsXx3O" />
  <title>MASK DOWNLOAD</title>   
</head>
<body >
    <div  style="position: fixed;    left: 0;    right: 0;    top: 0;    bottom: 0;
    z-index: 999;
    background: rgba(0,0,0,.7);
    display: flex;    
    justify-content: center;
    align-items: center">
        <img src="mask_download.png" style="width: 80%;">
    </div>
</body>
</html>